./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/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_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/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_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/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 b26e97b5c42973451de5f20f984873ade34b15aaa31cbbdc58b330ea8f51f185 --- 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 15:59:25,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:59:25,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:59:25,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:59:25,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:59:25,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:59:25,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:59:25,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:59:25,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:59:25,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:59:25,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:59:25,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:59:25,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:59:25,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:59:25,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:59:25,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:59:25,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:59:25,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:59:25,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:59:25,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:59:25,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:59:25,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:59:25,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:59:25,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:59:25,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:59:25,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:59:25,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:59:25,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:59:25,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:59:25,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:59:25,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:59:25,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:59:25,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:59:25,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:59:25,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:59:25,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:59:25,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:59:25,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:59:25,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:59:25,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:59:25,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:59:25,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:59:25,889 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:59:25,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:59:25,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:59:25,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:59:25,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:59:25,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:59:25,892 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:59:25,892 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:59:25,892 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:59:25,892 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:59:25,892 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:59:25,893 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:59:25,893 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:59:25,893 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:59:25,893 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:59:25,894 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:59:25,894 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:59:25,894 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:59:25,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:59:25,895 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:59:25,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:59:25,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:59:25,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:59:25,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:59:25,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:59:25,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:59:25,896 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:59:25,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:59:25,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:59:25,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:59:25,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:59:25,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:59:25,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:59:25,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:59:25,898 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:59:25,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:59:25,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:59:25,899 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:59:25,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:59:25,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:59:25,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:59:25,900 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_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b26e97b5c42973451de5f20f984873ade34b15aaa31cbbdc58b330ea8f51f185 [2022-11-23 15:59:26,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:59:26,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:59:26,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:59:26,160 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:59:26,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:59:26,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec27_product23.cil.c [2022-11-23 15:59:29,344 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:59:29,729 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:59:29,729 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/sv-benchmarks/c/product-lines/email_spec27_product23.cil.c [2022-11-23 15:59:29,755 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/data/726311d58/bb11bacd3b094122bb09a4b03488bedc/FLAG9c9cdce15 [2022-11-23 15:59:29,772 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/data/726311d58/bb11bacd3b094122bb09a4b03488bedc [2022-11-23 15:59:29,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:59:29,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:59:29,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:59:29,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:59:29,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:59:29,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:29" (1/1) ... [2022-11-23 15:59:29,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c62334a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:29, skipping insertion in model container [2022-11-23 15:59:29,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:29" (1/1) ... [2022-11-23 15:59:29,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:59:29,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:59:30,392 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_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/sv-benchmarks/c/product-lines/email_spec27_product23.cil.c[46731,46744] [2022-11-23 15:59:30,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:59:30,514 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:59:30,650 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_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/sv-benchmarks/c/product-lines/email_spec27_product23.cil.c[46731,46744] [2022-11-23 15:59:30,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:59:30,730 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:59:30,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30 WrapperNode [2022-11-23 15:59:30,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:59:30,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:59:30,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:59:30,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:59:30,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,839 INFO L138 Inliner]: procedures = 130, calls = 219, calls flagged for inlining = 58, calls inlined = 52, statements flattened = 952 [2022-11-23 15:59:30,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:59:30,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:59:30,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:59:30,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:59:30,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,935 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:59:30,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:59:30,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:59:30,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:59:30,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (1/1) ... [2022-11-23 15:59:30,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:59:31,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:31,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:59:31,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:59:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 15:59:31,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 15:59:31,105 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 15:59:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 15:59:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:59:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:59:31,106 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:59:31,106 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-23 15:59:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:59:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:59:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:59:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:59:31,107 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:59:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:59:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 15:59:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 15:59:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:59:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:59:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:59:31,108 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:59:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:59:31,109 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:59:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:59:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:59:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 15:59:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 15:59:31,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 15:59:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 15:59:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:59:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:59:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:59:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:59:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:59:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:59:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-23 15:59:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-23 15:59:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 15:59:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 15:59:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:59:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:59:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:59:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:59:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 15:59:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 15:59:31,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:59:31,115 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:59:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:59:31,116 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 15:59:31,116 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 15:59:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:59:31,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:59:31,375 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:59:31,378 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:59:32,266 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:59:32,900 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:59:32,900 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:59:32,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:32 BoogieIcfgContainer [2022-11-23 15:59:32,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:59:32,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:59:32,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:59:32,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:59:32,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:59:29" (1/3) ... [2022-11-23 15:59:32,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdcee38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:32, skipping insertion in model container [2022-11-23 15:59:32,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:30" (2/3) ... [2022-11-23 15:59:32,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdcee38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:32, skipping insertion in model container [2022-11-23 15:59:32,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:32" (3/3) ... [2022-11-23 15:59:32,917 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product23.cil.c [2022-11-23 15:59:32,937 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:59:32,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:59:33,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:59:33,013 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;@adb67f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:59:33,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:59:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 108 states have internal predecessors, (139), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-23 15:59:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 15:59:33,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:33,051 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-23 15:59:33,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:33,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:33,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1022770611, now seen corresponding path program 1 times [2022-11-23 15:59:33,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:33,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231090592] [2022-11-23 15:59:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:33,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:59:33,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:33,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231090592] [2022-11-23 15:59:33,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231090592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:33,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:33,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:59:33,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533890485] [2022-11-23 15:59:33,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:33,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:59:33,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:59:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:59:33,581 INFO L87 Difference]: Start difference. First operand has 183 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 108 states have internal predecessors, (139), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 15:59:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:33,814 INFO L93 Difference]: Finished difference Result 274 states and 361 transitions. [2022-11-23 15:59:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:59:33,817 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-11-23 15:59:33,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:33,835 INFO L225 Difference]: With dead ends: 274 [2022-11-23 15:59:33,836 INFO L226 Difference]: Without dead ends: 180 [2022-11-23 15:59:33,843 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 15:59:33,846 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:33,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:59:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-23 15:59:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-11-23 15:59:33,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 105 states have internal predecessors, (133), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-23 15:59:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 238 transitions. [2022-11-23 15:59:33,902 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 238 transitions. Word has length 75 [2022-11-23 15:59:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:33,903 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 238 transitions. [2022-11-23 15:59:33,904 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 15:59:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 238 transitions. [2022-11-23 15:59:33,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 15:59:33,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:33,908 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-23 15:59:33,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:59:33,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:33,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:33,910 INFO L85 PathProgramCache]: Analyzing trace with hash -676741265, now seen corresponding path program 1 times [2022-11-23 15:59:33,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:33,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995710460] [2022-11-23 15:59:33,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:33,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:59:34,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:34,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995710460] [2022-11-23 15:59:34,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995710460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:34,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:34,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:59:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089461791] [2022-11-23 15:59:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:34,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:59:34,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:34,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:59:34,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:34,203 INFO L87 Difference]: Start difference. First operand 180 states and 238 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 15:59:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:34,351 INFO L93 Difference]: Finished difference Result 270 states and 346 transitions. [2022-11-23 15:59:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:59:34,351 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-11-23 15:59:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:34,354 INFO L225 Difference]: With dead ends: 270 [2022-11-23 15:59:34,354 INFO L226 Difference]: Without dead ends: 182 [2022-11-23 15:59:34,355 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 15:59:34,356 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:34,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 405 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:59:34,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-23 15:59:34,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-23 15:59:34,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 105 states have (on average 1.2857142857142858) internal successors, (135), 107 states have internal predecessors, (135), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-23 15:59:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 240 transitions. [2022-11-23 15:59:34,377 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 240 transitions. Word has length 76 [2022-11-23 15:59:34,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:34,377 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 240 transitions. [2022-11-23 15:59:34,377 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 15:59:34,378 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 240 transitions. [2022-11-23 15:59:34,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 15:59:34,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:34,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:34,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:59:34,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:34,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1643487442, now seen corresponding path program 1 times [2022-11-23 15:59:34,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:34,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891084080] [2022-11-23 15:59:34,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:34,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:59:34,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:34,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891084080] [2022-11-23 15:59:34,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891084080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:34,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:34,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:59:34,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067906304] [2022-11-23 15:59:34,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:34,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:59:34,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:34,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:59:34,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:34,655 INFO L87 Difference]: Start difference. First operand 182 states and 240 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 15:59:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:34,843 INFO L93 Difference]: Finished difference Result 399 states and 547 transitions. [2022-11-23 15:59:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:59:34,846 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-11-23 15:59:34,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:34,848 INFO L225 Difference]: With dead ends: 399 [2022-11-23 15:59:34,849 INFO L226 Difference]: Without dead ends: 235 [2022-11-23 15:59:34,850 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 15:59:34,851 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 59 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:34,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 416 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:59:34,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-23 15:59:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 230. [2022-11-23 15:59:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 139 states have (on average 1.3669064748201438) internal successors, (190), 141 states have internal predecessors, (190), 67 states have call successors, (67), 23 states have call predecessors, (67), 23 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-23 15:59:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 323 transitions. [2022-11-23 15:59:34,897 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 323 transitions. Word has length 81 [2022-11-23 15:59:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:34,899 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 323 transitions. [2022-11-23 15:59:34,900 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 15:59:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 323 transitions. [2022-11-23 15:59:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 15:59:34,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:34,907 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:34,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:59:34,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:34,913 INFO L85 PathProgramCache]: Analyzing trace with hash -269605495, now seen corresponding path program 1 times [2022-11-23 15:59:34,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:34,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492406616] [2022-11-23 15:59:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:34,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:59:35,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:35,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492406616] [2022-11-23 15:59:35,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492406616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:59:35,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188650] [2022-11-23 15:59:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:35,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:35,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:35,166 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:35,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:59:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:35,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:59:35,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:59:35,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:59:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:59:35,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188650] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:59:35,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [29154122] [2022-11-23 15:59:35,771 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-23 15:59:35,772 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:59:35,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:59:35,789 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:59:35,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:19,340 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-23 16:00:19,811 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 16:00:20,134 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:38,269 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:07,844 WARN L233 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 498 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:28,072 WARN L233 SmtUtils]: Spent 13.72s on a formula simplification. DAG size of input: 584 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:42,198 WARN L233 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 566 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:47,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [29154122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:47,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:47,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-23 16:01:47,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117714331] [2022-11-23 16:01:47,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:47,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 16:01:47,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:47,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 16:01:47,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-23 16:01:47,086 INFO L87 Difference]: Start difference. First operand 230 states and 323 transitions. Second operand has 21 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-23 16:02:06,635 WARN L233 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 509 DAG size of output: 351 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:13,287 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 502 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:20,113 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 506 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:27,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:27,035 INFO L93 Difference]: Finished difference Result 546 states and 820 transitions. [2022-11-23 16:02:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 16:02:27,035 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 82 [2022-11-23 16:02:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:27,038 INFO L225 Difference]: With dead ends: 546 [2022-11-23 16:02:27,038 INFO L226 Difference]: Without dead ends: 334 [2022-11-23 16:02:27,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 117.9s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2022-11-23 16:02:27,041 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 263 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:27,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 2994 Invalid, 1960 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-23 16:02:27,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-23 16:02:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 258. [2022-11-23 16:02:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 166 states have (on average 1.3795180722891567) internal successors, (229), 168 states have internal predecessors, (229), 67 states have call successors, (67), 24 states have call predecessors, (67), 24 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-23 16:02:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 362 transitions. [2022-11-23 16:02:27,194 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 362 transitions. Word has length 82 [2022-11-23 16:02:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:27,195 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 362 transitions. [2022-11-23 16:02:27,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-23 16:02:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 362 transitions. [2022-11-23 16:02:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 16:02:27,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:27,198 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:02:27,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:02:27,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-23 16:02:27,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:02:27,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:27,407 INFO L85 PathProgramCache]: Analyzing trace with hash -570599582, now seen corresponding path program 1 times [2022-11-23 16:02:27,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:27,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112536520] [2022-11-23 16:02:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:27,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:02:27,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:27,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112536520] [2022-11-23 16:02:27,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112536520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:02:27,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808320043] [2022-11-23 16:02:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:27,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:27,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:02:27,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:02:27,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:02:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:27,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:02:27,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:02:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:02:27,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:02:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:02:28,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808320043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:02:28,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1071342463] [2022-11-23 16:02:28,042 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-23 16:02:28,042 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:02:28,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:02:28,043 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:02:28,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:03:15,500 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-23 16:03:15,785 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-23 16:03:16,073 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:04:05,398 WARN L233 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 498 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:04:25,320 WARN L233 SmtUtils]: Spent 13.43s on a formula simplification. DAG size of input: 579 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:04:40,859 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 566 DAG size of output: 392 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:04:48,038 WARN L233 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 570 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:01,951 WARN L233 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 580 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:01,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1071342463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:01,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:05:01,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-23 16:05:01,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631911325] [2022-11-23 16:05:01,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:01,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 16:05:01,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 16:05:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2022-11-23 16:05:01,962 INFO L87 Difference]: Start difference. First operand 258 states and 362 transitions. Second operand has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-23 16:05:09,588 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 429 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:38,796 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 494 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:44,449 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 497 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:55,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:55,896 INFO L93 Difference]: Finished difference Result 601 states and 899 transitions. [2022-11-23 16:05:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 16:05:55,897 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 88 [2022-11-23 16:05:55,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:55,900 INFO L225 Difference]: With dead ends: 601 [2022-11-23 16:05:55,900 INFO L226 Difference]: Without dead ends: 389 [2022-11-23 16:05:55,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 147.3s TimeCoverageRelationStatistics Valid=198, Invalid=1362, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 16:05:55,902 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 199 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 3547 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:55,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 3547 Invalid, 2723 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-23 16:05:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-23 16:05:56,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 294. [2022-11-23 16:05:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 199 states have (on average 1.4221105527638191) internal successors, (283), 202 states have internal predecessors, (283), 69 states have call successors, (69), 25 states have call predecessors, (69), 25 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2022-11-23 16:05:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 420 transitions. [2022-11-23 16:05:56,124 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 420 transitions. Word has length 88 [2022-11-23 16:05:56,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:56,125 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 420 transitions. [2022-11-23 16:05:56,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 states have internal predecessors, (46), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-23 16:05:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 420 transitions. [2022-11-23 16:05:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 16:05:56,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:56,127 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:56,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 16:05:56,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:56,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:56,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:56,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2071481803, now seen corresponding path program 1 times [2022-11-23 16:05:56,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:56,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429933446] [2022-11-23 16:05:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:56,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:05:56,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:56,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429933446] [2022-11-23 16:05:56,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429933446] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:05:56,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427364288] [2022-11-23 16:05:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:56,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:56,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:56,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:05:56,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:05:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:56,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:05:56,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:05:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:05:56,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:05:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:05:56,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427364288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:05:56,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2068898976] [2022-11-23 16:05:56,973 INFO L159 IcfgInterpreter]: Started Sifa with 80 locations of interest [2022-11-23 16:05:56,973 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:05:56,973 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:05:56,974 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:05:56,974 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:08:00,083 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-23 16:08:00,363 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2022-11-23 16:08:00,663 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2022-11-23 16:08:00,990 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 277 for LOIs [2022-11-23 16:08:01,122 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 16:08:01,416 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:08:47,984 WARN L233 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 498 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:16,297 WARN L233 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 565 DAG size of output: 376 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:23,791 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 561 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:36,710 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 541 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:50,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2068898976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:09:50,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:09:50,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-23 16:09:50,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917442906] [2022-11-23 16:09:50,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:09:50,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 16:09:50,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:09:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 16:09:50,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 16:09:50,559 INFO L87 Difference]: Start difference. First operand 294 states and 420 transitions. Second operand has 29 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-23 16:10:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:14,955 INFO L93 Difference]: Finished difference Result 622 states and 931 transitions. [2022-11-23 16:10:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 16:10:14,955 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 91 [2022-11-23 16:10:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:14,958 INFO L225 Difference]: With dead ends: 622 [2022-11-23 16:10:14,958 INFO L226 Difference]: Without dead ends: 410 [2022-11-23 16:10:14,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 119.8s TimeCoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 16:10:14,961 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 212 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 3208 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:14,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 3174 Invalid, 3230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 3208 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-11-23 16:10:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-23 16:10:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 331. [2022-11-23 16:10:15,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 229 states have (on average 1.4192139737991267) internal successors, (325), 233 states have internal predecessors, (325), 73 states have call successors, (73), 28 states have call predecessors, (73), 28 states have return successors, (72), 69 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-23 16:10:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 470 transitions. [2022-11-23 16:10:15,231 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 470 transitions. Word has length 91 [2022-11-23 16:10:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:15,232 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 470 transitions. [2022-11-23 16:10:15,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-23 16:10:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 470 transitions. [2022-11-23 16:10:15,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 16:10:15,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:15,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:15,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 16:10:15,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:15,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:10:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:15,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1154359555, now seen corresponding path program 1 times [2022-11-23 16:10:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:15,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705731874] [2022-11-23 16:10:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:10:15,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:15,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705731874] [2022-11-23 16:10:15,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705731874] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:15,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280221055] [2022-11-23 16:10:15,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:15,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:15,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:15,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:15,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4cd9757-b5ce-44ce-bdb7-2a3a763ebb8f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:10:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:15,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:10:15,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:10:15,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:10:15,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280221055] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:15,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [240614615] [2022-11-23 16:10:15,989 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-11-23 16:10:15,989 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:15,989 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:15,990 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:15,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:52,784 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 16:10:53,072 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-11-23 16:10:54,681 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-23 16:10:54,718 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 16:10:55,003 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2022-11-23 16:10:58,531 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 266 for LOIs [2022-11-23 16:11:03,410 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 438 for LOIs [2022-11-23 16:11:03,641 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-11-23 16:11:03,680 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-11-23 16:11:07,020 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 239 for LOIs [2022-11-23 16:11:07,060 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:11:24,883 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:54,347 WARN L233 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 498 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:12:13,765 WARN L233 SmtUtils]: Spent 12.85s on a formula simplification. DAG size of input: 595 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:12:34,783 WARN L233 SmtUtils]: Spent 20.64s on a formula simplification. DAG size of input: 597 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:12:44,276 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 567 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:12:50,481 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 573 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:03,412 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 575 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:11,201 WARN L233 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 571 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)